/* text.h */

/* some message port things */
#define REPLYPORT(a) ((a)->mn_ReplyPort)
#define TMREPLYPORT(a) (REPLYPORT(&((a)->Msg)))

/* string length... if -1 check for where the null termination is */
#define STRLEN(a) ((((a)->StrLen==-1)?strlen((a)->String):(a)->StrLen))
#define STR(a) (a->String)


/* Messages sent/received are in this format */
/* Usually for text but may send other things if U like */

struct String0 {
		char *String;		/* pointer to memory of string */
		long StrLen;		/* actual string length (or -1 for NULL termination) */
		long FreeLen;		/* If string is to be freed, how much mem was alloc'd */
};
/*
  the receiver should do the following:
	if(FreeLen > 0) FreeMem(String, FreeLen);
  when finished with the string
*/

struct TextMessage {
		struct	Message Msg;
		long	Command;		/* What should we do?? */
		struct	String0 String;
		struct	String0 RepString;
		long    Args[8];		/* 8 arguments */
		void	*Extra;			/* expandable! */

};

/* Currently defined commands (default) */
#define TM_TEXT			't'				/* ordinary text.. send it or whateever */
#define TM_EXIT			'q'				/* tell receiver to die */
#define TM_SETWIDTH		'w'				/* set window width */
#define TM_SETHEIGHT	'l'				/* Set window height */
#define TM_HELP			'h'				/* ask receiver known command */
#define TM_COMMAND		'c'				/* Send a command to receiver */

/*
When replying totextmessages the receiver should either use the supplied
SafeReplyTextMessage(message), where message is a pointer to the sent
message
or other wise perform the following steps:
SafeFreeString0(&(msg->String)); which sets that pointer to NULL also
		if(TMREPLYPORT(msg))
			ReplyMsg((struct Message *)msg);
		else FreeMem(msg, sizeof(struct TextMessage));

this means that if the sender does not want thestring or the message freed
then it should have areply port for it to be returned.
*/